hmcr82 hmcr82 27-05-2020 Biology contestada r it answe know it dont If you dont Fill in the blank: The number of molecules in a chemical reaction are indicated by the _______ The ___________ on the left side of an equation must be balanced with the atoms on the right side of the equation. Question 2 options: total number of molecules total number of atoms total number of compounds free electrons What happens in a covalent bond between atoms? Question 3 options: each atom shares electrons so that they are both stable electrons are lost by one atom and gained by the other the smaller atom’s neutrons repel the electrons the electrons flow in an electric current away from the bonded pair of atoms (4) Fill in the blank: What is the correct name for the ionic compound Ca2P5? What does a chemical change always result in? Question 5 options: precipitate new reactant increased activation energy new substance Metals tend to ________ electrons and become __________. Question 6 options: lose, anions lose, cations gain, anions gain, cations How many valence electrons do most atoms need to have in their outer shell to be most stable? Question 7 options: 8 1 4 6
